Skip the auto shop - Our mechanics make house calls

Q: Idle Failure - 1995 Jeep Grand Cherokee

asked by on

I Have A 95 Jeep Grand Cherokee that was given To Me And When I Try Starting It , It Would Only Run For Couple Seconds Then Died. Engine made Hissing Noise ... Intake Was Not Connected. Transmission cooler lines Were Also Disconnected .. Do I Need A New IAC Valve Or Is It Because Trans Cooler And Intake Werent Connected? Check Engine Light Came On Instantly.. Need Help. !

My car has 169364 miles.
My car has an automatic transmission.

This may be a sign of a failing idle air control valve. The idle air control valve is located on or near your intake manifold that monitors the air intake as it is mixed with fuel prior to being injected into the engine. This valve is controlled by the vehicle’s computer which will adjust idle speed based upon other measurements such as engine temperature, intake air temperature, and electrical system load or voltage. When you accelerate, the engine RPM increases, and as you let off the gas, the RPM slowly returns to the normal idling speed. However, when the engine RPM drops below the normal range of 800 RPM (for most cars), it is more than likely that you are dealing with an IAC valve problem. In cases where this valve is clogged or is failing, your vehicle will stall instead of slowing to an idle after the release of the throttle. I would recommend having an expert come to your home to diagnose the stalling issue and replace your idle air control valve if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Idle Failure - 1995 Jeep Grand Cherokee

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My truck turns over but won't start.

It is possible that the oil pump has failed, however, it could also be something else. If it turns over slower than normal, that indicates possible internal bearing damage from lack of oil, due to the pump failure. If it...

Q: after 20 mins of driving my car acts likes its suffercating until it cools down

A faulty air/fuel oxygen sensor may cause the engine to run rough as it send improper information to the vehicles computer. I'm curious if the Check Engine Light is on. If there is a faulty sensor the vehicle can store...

Q: Air in power steering fluid after radiator replacemant

Hi, thanks for writing in. This is a very unique design - the radiator fan uses power steering hydraulic fluid to operate. Your husband likely opened the power steering lines during radiator replacement, allowing air to enter the system. Fortunately,...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...